基于流固耦合仿真的变压器离心风机叶片断裂故障分析
Fracture Fault Analysis of Transformer Centrifugal Fan Blade Based on Fluid-Structure Interaction Simulation
吴欣烨 1虞晓巍 2胡敏 2宋俊杰 2姜仕伟 2江泓 2靳帅龙3
作者信息
- 1. 国网上海市电力公司,上海 200122
- 2. 上海久隆电力(集团)有限公司,上海 200436
- 3. 上海大学力学与工程科学学院上海市应用数学和力学研究所,上海 200072
- 折叠
摘要
风机是日常生活和工业生产中最常见的机械设备,在各个领域发挥着重要作用,被誉为国民经济的"呼吸系统".根据气体流动的方向,可以将风机分为离心式和轴流式两种,其中应用更广泛的是离心式风机,其在电力系统中常被用来输送六氟化硫气体.然而随着设备使用年限的增加,不可避免地会产生各类机械故障,其中叶片断裂是最常见且最严重的故障之一.该文通过流固耦合模拟,分析叶片受力情况,对比叶片材料强度,研究叶片断裂的原因及机理,发现叶片发生了超高周疲劳破坏,并提出了合理的建议.
Abstract
Local fans are the most common mechanical equipment in daily life and industrial production,playing an important role in various fields and being known as the"respiratory system"of the national economy.According to the direction of gas flow,fans can be divided into two types:centrifugal and axial flow.Among them,centrifugal fans are used more widely.In the power system,centrifugal fans are often used to transport sulfur hexafluoride gas.However,with the increase of equipment usage years,various mechanical failures will inevitably occur,among which blade fracture is one of the most common and serious failures.In this paper,the stress of the blade is analyzed through fluid-structure interaction simulation,and the material strength of the blade is compared.The reason and mechanism of blade fracture are studied.It is found that the blade has undergone ultra-high cycle fatigue failure,and reasonable suggestions are put forward.
关键词
离心风机/叶片断裂/流固耦合/超高周疲劳破坏Key words
Centrifugal fan/Blade fracture/Fluid-structure interaction/Ultra-high-cycle fatigue failure引用本文复制引用
出版年
2025
NETL
NSTL
万方数据